How come a question can not have an upvote but the answer to that question can have a good upvote?
For example see my question:
First, let's see what the help text to the button says:
I suppose most people thought that a bit of research would have shown that the answer is "obviously" no to the question.
Additionally there may be a "herd effect" going on where people see that the question has no upvotes and thus think twice before upvoting whereas they are more easily "tempted" to upvote if somebody else upvoted beforehand, maybe because they implicitely assume that that other individual has already done the "hard work" of deciding that the question is "good".
Now let's look at the text for the answer upvote button:
Additionally to the above-mentioned "herd-effect" applying again here, the criterion is weaker. Is the answer useful? Yes because
Additionally (a minor point though), the answer "bashes" the current trend-technology that is "machine-learning / AI", that in some groups has a similar status to blockchain as "overhyped technology" by calling it "glorified gradient descent" giving it sympathy points for members of these groups.